Pure Storage PowerShell Toolkit 2.5.0.324

For those users of the PowerShell Toolkit this release has two significant changes:

Support for PSCredential

FlashArray parameter is now Optional

These two updates were a result of issues on GitHub (Issue #7 and Issue #9). We appreciate the feedback and use of the toolkit to help deliver features that are useful. Additionally, I centralized error handling between Generic PowerShell errors and specific Pure Storage REST API errors.